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这篇文章主要为大家详细介绍了redis组建集群的操作步骤,文中示例代码介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们可以参考一下。
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2018年十月 Redis 发布了稳定版本的 5.0 版本,推出了各种新特性,其中一点是放弃 Ruby的集群方式,改为 使用 C语言编写的 redis-cli的方式,是集群的构建方式复杂度大大降低。关于集群的更新可以在 Redis5 的版本说明中看到,如下:
The cluster manager was ported from Ruby (redis-trib.rb) to C code inside redis-cli. check `redis-cli --cluster help ` for more info.
可以查看Redis官网查看集群搭建方式,连接如下
https://redis.io/topics/cluster-tutorial
以下步骤是在一台 Linux 服务器上搭建有6个节点的 Redis集群。
操作步骤
创建目录
新建目录:/root/software/redis
下载源码并解压编译
wget http://download.redis.io/releases/redis-5.0.0.tar.gz tar xzf redis-5.0.0.tar.gz cd redis-5.0.0 make
创建6个Redis配置文件
6个配置文件不能在同一个目录,此处我们定义如下:
/root/software/redis/redis-cluster-conf/7001/redis.conf /root/software/redis/redis-cluster-conf/7002/redis.conf /root/software/redis/redis-cluster-conf/7003/redis.conf /root/software/redis/redis-cluster-conf/7004/redis.conf /root/software/redis/redis-cluster-conf/7005/redis.conf /root/software/redis/redis-cluster-conf/7006/redis.conf
配置文件的内容为:
port 7001 #端口 cluster-enabled yes #启用集群模式 cluster-config-file nodes.conf cluster-node-timeout 5000 #超时时间 appendonly yes daemonize yes #后台运行 protected-mode no #非保护模式 pidfile /var/run/redis_7001.pid
其中 port 和 pidfile 需要随着 文件夹的不同调增
启动节点
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7001/redis.conf /root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7002/redis.conf /root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7003/redis.conf /root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7004/redis.conf /root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7005/redis.conf /root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7006/redis.conf
启动集群
/root/software/redis/redis-5.0.0/src/redis-cli --cluster create 192.168.2.40:7001 192.168.2.40:7002 192.168.2.40:7003 192.168.2.40:7004 192.168.2.40:7005 192.168.2.40:7006 --cluster-replicas 1
启动后,可看到成功信息,如下:
>>> Performing hash slots allocation on 6 nodes... Master[0] -> Slots 0 - 5460 Master[1] -> Slots 5461 - 10922 Master[2] -> Slots 10923 - 16383 Adding replica 192.168.2.40:7004 to 192.168.2.40:7001 Adding replica 192.168.2.40:7005 to 192.168.2.40:7002 Adding replica 192.168.2.40:7006 to 192.168.2.40:7003 >>> Trying to optimize slaves allocation for anti-affinity [WARNING] Some slaves are in the same host as their master M: 191c645200a8b4d267f71e3354c8248dbb533dde 192.168.2.40:7001 slots:[0-5460] (5461 slots) master M: 400a08d4e5a534c1b609988105d3e045395fbd12 192.168.2.40:7002 slots:[5461-10922] (5462 slots) master M: 684f6aa0fbccda295ce6818a8c01ee7255a7b002 192.168.2.40:7003 slots:[10923-16383] (5461 slots) master S: f2701549ae98315b432d73b49d139ee77d5685b4 192.168.2.40:7004 replicates 684f6aa0fbccda295ce6818a8c01ee7255a7b002 S: 9fdc1e375436767ab815cbddd3df674f3bc2ca99 192.168.2.40:7005 replicates 191c645200a8b4d267f71e3354c8248dbb533dde S: e7742888ed85b37cff4a98e861e99bb16e8bae2c 192.168.2.40:7006 replicates 400a08d4e5a534c1b609988105d3e045395fbd12 Can I set the above configuration? (type 'yes' to accept): yes >>> Nodes configuration updated >>> Assign a different config epoch to each node >>> Sending CLUSTER MEET messages to join the cluster Waiting for the cluster to join .... >>> Performing Cluster Check (using node 192.168.2.40:7001) M: 191c645200a8b4d267f71e3354c8248dbb533dde 192.168.2.40:7001 slots:[0-5460] (5461 slots) master 1 additional replica(s) M: 684f6aa0fbccda295ce6818a8c01ee7255a7b002 192.168.2.40:7003 slots:[10923-16383] (5461 slots) master 1 additional replica(s) S: 9fdc1e375436767ab815cbddd3df674f3bc2ca99 192.168.2.40:7005 slots: (0 slots) slave replicates 191c645200a8b4d267f71e3354c8248dbb533dde S: e7742888ed85b37cff4a98e861e99bb16e8bae2c 192.168.2.40:7006 slots: (0 slots) slave replicates 400a08d4e5a534c1b609988105d3e045395fbd12 M: 400a08d4e5a534c1b609988105d3e045395fbd12 192.168.2.40:7002 slots:[5461-10922] (5462 slots) master 1 additional replica(s) S: f2701549ae98315b432d73b49d139ee77d5685b4 192.168.2.40:7004 slots: (0 slots) slave replicates 684f6aa0fbccda295ce6818a8c01ee7255a7b002 [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
至此,Reids集群搭建完成。
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